Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

  1. Ativan

Descriptions


Lorazepam injection is used before certain medical procedures, including surgery, to relieve anxiety. When lorazepam is used before surgery, the patient will not remember some of the details about the procedure. It is also used to treat seizures, including status epilepticus.

Lorazepam is a benzodiazepine. Benzodiazepines belong to the group of medicines called central nervous system (CNS) depressants, which are medicines that slow down the nervous system.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Solution

Before Using

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies have not been performed on the relationship of age to the effects of lorazepam injection in the pediatric population. Safety and efficacy have not been established.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of lorazepam injection in the elderly. However, elderly patients are more likely to have severe drowsiness, or age-related heart, liver, or kidney problems, which may require an adjustment in the dose in patients receiving lorazepam injection.

Breastfeeding

Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Flumazenil

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Alfentanil
  • Alprazolam
  • Amobarbital
  • Anileridine
  • Aripiprazole
  • Benzhydrocodone
  • Bromazepam
  • Bromopride
  • Buprenorphine
  • Butabarbital
  • Butalbital
  • Butorphanol
  • Calcifediol
  • Calcium Oxybate
  • Cannabidiol
  • Cannabis
  • Carbinoxamine
  • Carisoprodol
  • Cetirizine
  • Chloral Hydrate
  • Chlorzoxazone
  • Clobazam
  • Clonazepam
  • Codeine
  • Dantrolene
  • Daridorexant
  • Dexmedetomidine
  • Dezocine
  • Diacetylmorphine
  • Difenoxin
  • Dihydrocodeine
  • Diphenoxylate
  • Doxylamine
  • Esketamine
  • Ethchlorvynol
  • Ethylmorphine
  • Fentanyl
  • Flibanserin
  • Fospropofol
  • Gabapentin
  • Gabapentin Enacarbil
  • Hydrocodone
  • Hydromorphone
  • Ivacaftor
  • Ketamine
  • Ketobemidone
  • Lacosamide
  • Lemborexant
  • Levocetirizine
  • Levorphanol
  • Lofexidine
  • Loxapine
  • Magnesium Oxybate
  • Meclizine
  • Meperidine
  • Mephenesin
  • Mephobarbital
  • Meprobamate
  • Meptazinol
  • Metaxalone
  • Methadone
  • Methocarbamol
  • Methohexital
  • Metoclopramide
  • Midazolam
  • Mirtazapine
  • Morphine
  • Morphine Sulfate Liposome
  • Nalbuphine
  • Nicomorphine
  • Opium
  • Opium Alkaloids
  • Orlistat
  • Oxycodone
  • Oxymorphone
  • Papaveretum
  • Paregoric
  • Pentazocine
  • Pentobarbital
  • Periciazine
  • Phenobarbital
  • Piritramide
  • Potassium Oxybate
  • Pregabalin
  • Primidone
  • Propofol
  • Remifentanil
  • Remimazolam
  • Ropeginterferon Alfa-2b-njft
  • Scopolamine
  • Secobarbital
  • Sodium Oxybate
  • Sufentanil
  • Tapentadol
  • Thiopental
  • Tilidine
  • Topiramate
  • Tramadol
  • Trazodone
  • Zolpidem
  • Zuranolone

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Desogestrel
  • Dienogest
  • Drospirenone
  • Estradiol
  • Ethinyl Estradiol
  • Ethynodiol
  • Gestodene
  • Levonorgestrel
  • Mestranol
  • Nomegestrol
  • Norethindrone
  • Norgestimate
  • Norgestrel
  • Posaconazole
  • Probenecid
  • Pyrimethamine
  • Rifapentine
  • St John's Wort
  • Theophylline
  • Valproic Acid

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Alcohol or drug abuse or dependence, or history of or
  • Breathing problems or lung disease, mild to moderate—Use with caution. May make these conditions worse.
  • Glaucoma, acute narrow-angle or
  • Lung disease, severe or
  • Sleep apnea (temporary stopping of breathing during sleep)—Should not be used in patients with these conditions.
  • Kidney disease or
  • Liver disease—Use with caution. The effects may be increased because of slower removal of the medicine from the body.

Proper Use

A nurse or other trained health professional will give you this medicine. This medicine is given through a needle placed in one of your veins or given as a shot into one of your muscles.

After you receive this medicine, your doctor will watch you closely to make sure it is working properly and to check for unwanted effects.

Precautions

It is very important that your doctor check your progress after you receive this medicine to make sure it is working properly and to check for any unwanted effects.

Tell your doctor if you are pregnant or planning to become pregnant. Using this medicine during the later pregnancy may cause problems in your newborn baby (eg, sedation or withdrawal symptoms). Tell your doctor right away if your baby has an abnormal sleep pattern, diarrhea, feeding problems, a high-pitched cry, irritability, low muscle tone, restlessness, shakiness or tremors, sluggishness, trouble breathing, weight loss, vomiting, or fails to gain weight. If you think you have become pregnant, tell your doctor right away.

This medicine contains benzyl alcohol which may cause serious reactions to newborn, premature, or low-birthweight infants. Discuss this with your doctor if you are concerned.

This medicine may cause drowsiness, trouble with thinking, trouble with controlling movements, or trouble with seeing clearly. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not alert or able to think or see well.

If you develop any unusual or strange thoughts and behavior while taking lorazepam injection, be sure to discuss it with your doctor. Some changes that have occurred in people taking this medicine are like those seen in people who drink too much alcohol. Other changes might be confusion, agitation, and hallucinations (seeing, hearing, or feeling things that are not there).

Symptoms of an overdose include: blurred vision, change in consciousness, confusion, dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position, loss of consciousness, loss of strength or energy, muscle pain or weakness, shakiness and unsteady walk, sweating, unsteadiness, trembling, or other problems with muscle control or coordination, unusual excitement, nervousness, restlessness, or irritability, or unusual tiredness or weakness. Call your doctor right away if you notice these symptoms.

This medicine may cause respiratory depression (serious breathing problem that can be life-threatening), especially when used with narcotic pain medicines. Tell your doctor if you are using any narcotic medicine.

This medicine will add to the effects of alcohol and other central nervous system (CNS) depressants. CNS depressants are medicines that slow down the nervous system, which may cause drowsiness or make you less alert. Some examples of CNS depressants are antihistamines or medicine for hay fever, allergies, or colds, sedatives, tranquilizers, or sleeping medicine, prescription pain medicine or narcotics, barbiturates (used for seizures), muscle relaxants, or anesthetics (numbing medicines), including some dental anesthetics. This effect may last for a few days after you stop taking this medicine. Check with your doctor before taking any of the above while you are using this medicine.

Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.

Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

More common

  1. Blue lips, fingernails, or skin
  2. blurred vision
  3. confusion
  4. difficult or trouble breathing
  5. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  6. irregular, fast or slow, or shallow breathing
  7. sleepiness or unusual drowsiness
  8. sweating
  9. unusual tiredness or weakness

Less common

  1. Decreased awareness or responsiveness
  2. not breathing

Rare

  1. Bleeding, blistering, burning, coldness, discoloration of skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
  2. bloody or cloudy urine
  3. blurred vision
  4. change in consciousness
  5. cough or hoarseness
  6. deep or fast breathing with dizziness
  7. difficult, burning, or painful urination
  8. dizziness
  9. extremely shallow or slow breathing
  10. false beliefs that cannot be changed by facts
  11. fever or chills
  12. frequent urge to urinate
  13. headache
  14. loss of consciousness
  15. lower back or side pain
  16. nervousness
  17. numbness of feet, hands and around mouth
  18. painful or difficult urination
  19. poor insight and judgement
  20. pounding in the ears
  21. problems with memory or speech
  22. problems with movement, walking, or speech
  23. seizures
  24. slow or fast heartbeat
  25. trouble thinking and planning
  26. vomiting

Incidence not known

  1. Black, tarry stools
  2. bleeding gums
  3. chest pain or discomfort
  4. dark urine
  5. fast, pounding, or irregular heartbeat or pulse
  6. high fever
  7. light-colored stools
  8. loss of bladder control
  9. loss of memory
  10. paralysis
  11. pinpoint red spots on the skin
  12. sever muscle stiffness
  13. stomach pain or bloating
  14. sudden onset of severe breathing difficulty
  15. unusual bleeding or bruising
  16. unusually pale skin
  17. yellow eyes or skin

Get emergency help immediately if any of the following symptoms of overdose occur:

Symptoms of overdose

  1. Agitation
  2. changes in patterns and rhythms of speech
  3. confusion
  4. excitement
  5. irritability
  6. loss of strength or energy
  7. muscle pain or weakness
  8. restlessness
  9. shakiness and unsteady walk
  10. slurred speech
  11. talkativeness
  12. trouble speaking
  13. unsteadiness, trembling, or other problems with muscle control or coordination
  14. unusual drowsiness, dullness, tiredness, weakness, or feeling of sluggishness
  15. unusual weak feeling

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Rare

  1. Nausea

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.